Awesome!
AI codec puts emphasis on human and vehicle while encoding, and will increase bitrate only for human and vehicle triggers.
But what this means is it will override your bitrate and other settings. It will force it into VBR even if you have CBR set.
Most of us prefer CBR as we have seen in certain field of views that with VBR the camera doesn't ramp up fast enough and you lose the chance for the clean capture.